Methylene Diphenyl Diisocyanate (MDI) CAS:101-68-8 Methylene Diphenyl Diisocyanate is produced by a 4 steps reaction based on benzene as feedstock. There are 3 isomers of MDI : 2,2-MDI, 2,4-MDI, and 4,4-MDI. The 4,4 isomer is known as pure or monomeric MDI (mMDI).The Polymeric MDI so called Crude MDI contains monomeric MDI and products with higher […]

DoDecaneDioic Acid (DDDA) Cas: 693-23-2 Dodecanedioic acid (DDDA) is a dibasic acid. It’s a white flakes solid with a molecular formula C12H22O4. Dodecanedioic Acid Chemical Structure Composition.  Production There are two different routes to produce DDDA: synthetic production and biological production. Traditionally, DDDA is produced from butadiene using a chemical process. The butadiene is converted into cyclododecatriene […]